Modern processors are capable of operating at a variety of frequencies (or "clock speeds") to balance being able to perform work quickly when required with being energy efficient while the system is idle. Performance issues may arise if the CPU remains at a low clock speed while demanding applications such as games are running.
Use the following terminal command to load the performance governor;
cpupower frequency-set -g performance
Note: We recommend monitoring your CPU temperatures while the performance governor is in use. This is designed to cause your CPU to do more work, which places a greater strain on your cooling solution. This can potentially result in overheating.
Returning to Defaults
For AMD CPUs, use the following terminal command to switch back;
cpupower frequency-set -g ondemand
For most Intel CPUs, use the following terminal command to switch back;
cpupower frequency-set -g powersave
Note: For Intel CPUs released before 2011 the same command for AMD CPUs should be used.